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Fig. 3 | Earth, Planets and Space

Fig. 3

From: Anatomy of active volcanic edifice at the Kusatsu–Shirane volcano, Japan, by magnetotellurics: hydrothermal implications for volcanic unrests

Fig. 3

Depth slices at a 1800 m ASL, b 1400 m ASL, c 1000 m ASL, d 500 m ASL and e 0 m ASL from the 3-D resistivity inversion at the peak area of Kusatsu–Shirane volcano. Seismic hypocenters are mapped as dots on each map within 200 m tolerance in depth. The white, black, and gray dots denote hypocenters for three periods before, during and after the 2014 unrest, namely from August 2013 to February 2014, from March 2014 to May 2014, and from June 2014 to February 2019. The white and black starts denote horizontal locations of magnetizations and demagnetizations corresponding to volcanic events from 1978 to 2012 after Takahashi & Fujii (2014). The red circles and open curves show the crater rims of past eruptions. The rectangle in (b) denotes the fitting between the resistor R1 and the locations of historical eruptions. Major fumaroles (F1 and F2) are shown by white closed curves

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